Storage handling for fault tolerance in virtual machines

Details Storage handling for fault tolerance in virtual machines Storage handling for fault tolerance in virtual machines

2008-09-09

2010-11-23

Chu, Gabriel L (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C707S610000

Reexamination Certificate

active

07840839

ABSTRACT:
A fault-tolerant virtualized computer system comprises a primary host executing a primary virtual machine (VM) and a backup host executing a backup VM. In one embodiment, each VM includes a virtual disk mapped to a shared disk image on physical disk accessible to both hosts. A virtual disk IO request is received by virtualization software executing on the backup host from a backup VM. When the virtual disk IO request is a read request, the virtual disk IO request is mapped to a physical read IO request of a virtual disk image stored on a physical disk, the physical read IO request is issued to the physical disk. However, when the virtual disk IO request is a write request, it is assumed to be completed without mapping the virtual disk IO request or issuing a mapped physical IO request to the physical disk.

REFERENCES:
patent: 6625751 (2003-09-01), Starovic et al.
patent: 6735717 (2004-05-01), Rostowfske et al.
patent: 7093086 (2006-08-01), van Rietschote
patent: 7287186 (2007-10-01), McCrory et al.
patent: 7774646 (2010-08-01), Smith et al.
patent: 2003/0018927 (2003-01-01), Gadir et al.
patent: 2003/0188233 (2003-10-01), Lubbers et al.
patent: 2008/0126853 (2008-05-01), Callaway et al.
patent: 2009/0300414 (2009-12-01), Huang et al.
Friedman et al., “Transparent Fault-Tolerant Java Virtual Machine”, 2003, IEEE.

Affiliated with

Also associated with

Rating

Storage handling for fault tolerance in virtual machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Storage handling for fault tolerance in virtual machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Storage handling for fault tolerance in virtual machines will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4198103